Praher Plastics 4 PVC-U, Руководство пользователя

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Warranty and liability
Warranty and liability claims in the context of damage to person or property shall be excluded
where such damage results from one or several of the causes listed below:

Improper use of the diaphragm valve pneumatically actuated and its superstructural parts
 Improper installation, putting into operation, operation and maintenance of the diaphragm
valve pneumatically actuated and its superstructural parts

Operation of the diaphragm valve pneumatically actuated and its superstructural parts with
defective or improper safety devices
 Non-compliance with the instructions contained in the operation manual for installation,
putting into operation, operation and maintenance of the diaphragm valve pneumatically
actuated and its superstructural parts

Unauthorized modification of the diaphragm valve pneumatically actuated and its
superstructural parts
 Insufficient monitoring of components subject to wear and tear

Inadequately performed repair of the diaphragm valve pneumatically actuated and its
superstructural parts

Damage of the diaphragm valve pneumatically actuated and its superstructural parts resulting
from foreign matter or Force Majeure
Leak and function tests have to be carried out before commissioning. After the pressure test, all
nuts and screws of the entire pipe system must be retightened in a depressurized state.
We recommend a maintenance service (testing of functionality and tightness) and careful visual
inspection in regular maintenance intervals minimum once a year, whereas with highly
aggressive media, strong vibrations and significant variations of temperature, the intervals
should be shortened. Seals must be considered as wear materials and must be lubricated and/or
changed regularly. Valves that are kept permanently in the same position should be operated 1-2x
a year to check full functionality and tightness.
With unfiltered media we recommend the installation of line strainers.
Enduring damage due to neglect of the operation manual or due to damaging sealed parts lead to
a lapse of the warranty. We do not take any liability for resulting damages thereof! Please read
the operation manual carefully before starting operation.
Instructions for safety at work

Each person, involved in the user’s facility, in the installation, dismantling, putting into
operation, operation or maintenance of the diaphragm valve pneumatically actuated and its
superstructural parts must have read and understood the entire operation manual and, in
particular, the chapter ‘Safety Instructions’.

The instruction and warning signs calling attention to dangers must be taken into account!
Dangerous voltage!
This is for your own safety